<template>
  <div class="login-container">
    <!-- el-from登录表单组件 -->
    <el-form
      ref="form"
      :model="loginForm"
      :rules="loginRules"
      class="login-form"
      auto-complete="on"
      label-position="left"
    >
      <div class="title-container">
        <h3 class="title">LQ学习vue管理系统</h3>
      </div>

      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="username"
          v-model="loginForm.username"
          placeholder="请输入账号"
          name="username"
          type="text"
          tabindex="1"
          auto-complete="on"
        />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="请输入密码"
          name="password"
          tabindex="2"
          auto-complete="on"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>
      <el-form-item prop="isChecked">
        <el-checkbox v-model="loginForm.isChecked">用户平台使用协议</el-checkbox>
      </el-form-item>

      <el-button
        :loading="loading"
        type="primary"
        style="width: 100%; margin-bottom: 30px; margin-top: 10px"
        @click.native.prevent="handleLogin"
        >登录</el-button
      >

      <!-- <div class="tips"> -->
      <!-- <span style="margin-right: 20px">默认用户名: admin</span> -->
      <!-- <span> 默认密码: 123456</span> -->
      <!-- </div> -->

      <!-- <el-button @click="testAjax">测试接口</el-button> -->
    </el-form>
  </div>
</template>

<script>
  // import axios from 'axios'
  import request from '@/utils/request'
  export default {
    name: 'Login',
    data() {
      return {
        loginForm: {
          // 区分一下是本地的开发环境还是生产环境，决定它是否有这个数据
          username: process.env.NODE_ENV === 'development' ? 'admin' : '',
          password: process.env.NODE_ENV === 'development' ? '123456' : '',
          isChecked: process.env.NODE_ENV === 'development'
        },
        loginRules: {
          username: [{ required: true, trigger: 'blur', message: '请输入账号' }],
          password: [
            { required: true, trigger: 'blur', message: '请输入密码' },
            { min: 6, max: 16, trigger: 'blur', message: '密码长度不正确' }
          ],
          // required 只能校验 null undefind ""
          isChecked: [
            // 自定义校验规则
            {
              // rule 校验规则
              // value 需要校验的值
              // callback 函数 单纯执行callback()就是成功 如果是失败的话，执行的是callback(new Error(错误信息))
              validator: (rule, value, callback) => {
                value ? callback() : callback(new Error('请勾选用户同意协议'))
              }
            }
          ]
        },
        loading: false,
        passwordType: 'password',
        redirect: undefined
      }
    },
    watch: {
      $route: {
        handler: function (route) {
          this.redirect = route.query && route.query.redirect
        },
        immediate: true
      }
    },
    methods: {
      testAjax() {
        // 发送请求
        // axios({
        //   url: '//dev-api/authentication/login', // 改地址会走代理，代理到http://127.0.0.1:8089
        //   method: 'post',
        //   data: { 'username': 'admin', 'password': '123456' }
        // })
        request({
          url: '/authentication/login',
          method: 'post',
          data: { username: 'admin', password: '12345678945' }
        })
      },
      showPwd() {
        if (this.passwordType === 'password') {
          this.passwordType = ''
        } else {
          this.passwordType = 'password'
        }
        this.$nextTick(() => {
          this.$refs.password.focus()
        })
      },
      // 登录按钮
      handleLogin() {
        // 首先是表单整体校验
        this.$refs.form.validate(async valid => {
          if (valid) {
            this.loading = true
            // 这里调用我们的actions中定义的方法
            await this.$store.dispatch('user/login', this.loginForm)
            // Vuex中的action返回的是一个Promise,我们必须等到这个Promise执行成功才可以跳转主页
            this.$router.push('/')
          } else {
            // console.log('表单整体校验未通过')
            return false
          }
        })
        // 不管成功还是失败,最后都要关闭按钮的loading效果
        this.loading = false
      }
    }
  }
</script>

<style lang="scss">
  /* 修复input 背景不协调 和光标变色 */
  /* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

  $bg: #283443;
  $light_gray: #fff;
  $cursor: #fff;

  @supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
    .login-container .el-input input {
      color: $cursor;
    }
  }

  /* reset element-ui css */
  .login-container {
    .el-input {
      display: inline-block;
      height: 47px;
      width: 85%;

      input {
        background: transparent;
        border: 0px;
        -webkit-appearance: none;
        border-radius: 0px;
        padding: 12px 5px 12px 15px;
        color: $light_gray;
        height: 47px;
        caret-color: $cursor;

        &:-webkit-autofill {
          box-shadow: 0 0 0px 1000px $bg inset !important;
          -webkit-text-fill-color: $cursor !important;
        }
      }
    }

    .el-form-item {
      border: 1px solid rgba(255, 255, 255, 0.1);
      background: rgba(0, 0, 0, 0.1);
      border-radius: 5px;
      color: #454545;
    }
  }
</style>

<style lang="scss" scoped>
  $bg: #2d3a4b;
  $dark_gray: #889aa4;
  $light_gray: #eee;

  .login-container {
    min-height: 100%;
    width: 100%;
    /* 添加背景图片 */
    background: url('~@/assets/background.png') no-repeat center center fixed;
    background-size: cover; // 确保背景图片覆盖整个区域
    overflow: hidden;

    .login-form {
      position: relative;
      width: 520px;
      max-width: 100%;
      padding: 160px 35px 0;
      margin: 0 auto;
      overflow: hidden;
    }

    .tips {
      font-size: 14px;
      color: #fff;
      margin-bottom: 10px;

      span {
        &:first-of-type {
          margin-right: 16px;
        }
      }
    }

    .svg-container {
      padding: 6px 5px 6px 15px;
      color: $dark_gray;
      vertical-align: middle;
      width: 30px;
      display: inline-block;
    }

    .title-container {
      position: relative;

      .title {
        font-size: 26px;
        color: $light_gray;
        margin: 0px auto 40px auto;
        text-align: center;
        font-weight: bold;
      }
    }

    .show-pwd {
      position: absolute;
      right: 10px;
      top: 7px;
      font-size: 16px;
      color: $dark_gray;
      cursor: pointer;
      user-select: none;
    }
  }
</style>
